func runtime.racesync 3 uses runtime (current package) chan.go#L296: racesync(c, sg) chan.go#L611: racesync(c, sg) chan.go#L806: func racesync(c *hchan, sg *sudog) {
The pages are generated with Golds v0.4.9. (GOOS=linux GOARCH=amd64)